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특허 상세정보

Device with a discriminating priority system

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) G02B-007/11   
미국특허분류(USC) 250/201 ; 250/204 ; 354/408
출원번호 US-0186132 (1988-06-09)
우선권정보 JP-0100069 (1984-05-17); JP-0104212 (1984-05-22); JP-0104213 (1984-05-22)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 4  인용 특허 : 15
초록

In a focus detection system for detecting focus condition of an objective lens, there is disposed a pair of photo sensor arrays each having a plurality of photo cells lined up in one diection to receive a first image and second image passed through respectively a lens system and the photo sensor arrays produce first original signal groups and second original signal groups each signal groups corresponding to light intensity of the images projected thereto. A processing device processes the original signal groups in such a manner that the first original si...

대표
청구항

A focus detection system for detecting the focus condition of an objective lens, comprising: optical means for forming displaced first and second images of an object so that the distance between the first and second images varies with the focus condition of the object image formed by the objective lens; image signal generating means for generating first and second image signals corresponding to the intensity distributions of the first and second object images; signal dividing means for dividing the first image signal into a plurality of block image signa...

이 특허에 인용된 특허 (15)

  1. Stauffer Norman L. (Englewood CO). Auto focus system. USP1980014184968.
  2. Eguchi Mitsuo (Saitama JPX) Tagawa Kiyoharu (Saitama JPX) Ogawa Hitoshi (Saitama JPX) Bandai Mikio (Saitama JPX) Nagashima Nobuharu (Saitama JPX). Automatic focus detecting device. USP1985064523829.
  3. Wilwerding ; Dennis J.. Automatic focus system with loss of correlation inhibit. USP1978044085320.
  4. Ogasawara Akira (Yokohama JPX) Watanabe Sakuji (Warabi JPX) Terui Nobuhiko (Tokyo JPX) Utagawa Ken (Yokohama JPX) Hoshino Kunihisa (Kawasaki JPX). Control device for automatic focusing. USP1987014634851.
  5. Horikawa Yoshiaki (Hachiouji JPX). Data correcting device in an automatic focus detecting system. USP1986124633073.
  6. Karasaki Toshihiko (Sakai JPX) Mukai Hiromu (Kawachinagano JPX) Kawamura Kunio (Sakai JPX). Focus condition detection device for cameras. USP1985074529287.
  7. Suzuki Kenji (Kawasaki JPX). Focus detecting apparatus. USP1986034573784.
  8. Kinoshita Takao (Tokyo JPX) Kawabata Takashi (Kanagawa JPX) Hosoe Kazuya (Tokyo JPX) Tsunekawa Tokuichi (Yokohama JPX) Sakane Toshio (Yokohama JPX). Focus detecting device. USP1984094470676.
  9. Utagawa Ken (Yokohama JPX) Hoshino Kunihisa (Kawasaki JPX) Shirasu Hiroshi (Kawasaki JPX) Ogasawara Akira (Yokohama JPX). Focus detecting device. USP1981104297571.
  10. Ishida Tokuji (Daito JPX) Hamada Masataka (Osaka JPX). Focus detecting device for use with cameras. USP1987014636624.
  11. Ishida Tokuji (Osaka JPX) Kozakai Katsumi (Sakai JPX) Hamada Masataka (Minami Kawachi JPX). Focus detecting device including means for determining a priority of correlation calculations. USP1988084766302.
  12. Sakai Shinji (Tokyo JPX) Shinoda Nobuhiko (Tokyo JPX) Hosoe Kazuya (Kunitachi JPX) Kinoshita Takao (Tokyo JPX). Focus detecting system. USP1987024641942.
  13. Utagawa, Ken. Focus detection apparatus. USP1985124561749.
  14. Matsumura, Susumu. In-focus state detection device. USP1985124561750.
  15. Masunaga Makoto (Tokyo JPX) Hosoe Kazuya (Machida JPX) Tsunekawa Tokuichi (Yokohama JPX) Niwa Yukichi (Yokohama JPX) Ohwada Mitsutoshi (Yokohama JPX) Asano Noriyuki (Kawasaki JPX). Range finding device. USP1981124305657.